Organotin esters of 3-(2-furanyl)-2-propenoic acid: their characterization and biological activity

Article abstract of DOI:10.1016/0022-328X(94)05050-L

Multinuclear NMR and Moessbauer spectroscopy have been carried out for di- and triorganotin carboxylates derived from 3-(2-furanyl)-2-propenoic acid.Their spectroscopic characterization showed that triorganotin carboxylates are either 4-coordinate monomers or 5-coordinate polymers with bridging carboxylate groups.Although a polymeric structure is favoured for most compounds in the solid state, the solution studies indicated that they exist as monomeric 4-coordinate species in non-coordinating solvents.Diorganotin carboxylates of the general formulaR2Sn(OOCCHCHC4H3O)2 and dimeric <(R2SnOOCCHCHC4H3O)2O>2 are penta-coordinate in noncoordinating solvents while in the solid phase intra- or intermolecular interactions are possible.Moreover, we report the fluxional behaviour of carboxylate anions in dimeric distannoxanes.The biological activity of these organotin carboxylates proved them to be powerful biocides.Keywords: Organotin; NMR; Biological activity; 3-(2-furanyl)-2-propenoic acid; Esters